Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-018-0277-3 |
Palaeocene-Eocene Thermal Maximum prolonged by fossil carbon oxidation | |
Lyons, Shelby L.1; Baczynski, Allison A.1; Babila, Tali L.2; Bralower, Timothy J.1; Hajek, Elizabeth A.1; Kump, Lee R.1; Polites, Ellen G.1; Self-Trail, Jean M.3; Trampush, Sheila M.4; Vornlocher, Jamie R.5; Zachos, James C.2; Freeman, Katherine H.1 | |
2019 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:1页码:54-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | A hallmark of the rapid and massive release of carbon during the Palaeocene-Eocene Thermal Maximum is the global negative carbon isotope excursion. The delayed recovery of the carbon isotope excursion, however, indicates that CO2 inputs continued well after the initial rapid onset, although there is no consensus about the source of this secondary carbon. Here we suggest this secondary input might have derived partly from the oxidation of remobilized sedimentary fossil carbon. We measured the bio-marker indicators of thermal maturation in shelf records from the US Mid-Atlantic coast, constructed biomarker mixing models to constrain the amount of fossil carbon in US Mid-Atlantic and Tanzania coastal records, estimated the fossil carbon accumulation rate in coastal sediments and determined the range of global CO2 release from fossil carbon reservoirs. This work provides evidence for an order of magnitude increase in fossil carbon delivery to the oceans that began similar to 10-20 kyr after the event onset and demonstrates that the oxidation of remobilized fossil carbon released between 10(2) and 10(4) PgC as CO2 during the body of the Palaeocene-Eocene Thermal Maximum. The estimated mass is sufficient to have sustained the elevated atmospheric CO2 levels required by the prolonged global carbon isotope excursion. Even after considering uncertainties in the sedimentation rates, these results indicate that the enhanced erosion, mobilization and oxidation of ancient sedimentary carbon contributed to the delayed recovery of the climate system for many thousands of years. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000454010200011 |
WOS关键词 | ORGANIC-CARBON ; ISOTOPE EXCURSIONS ; FRACTIONATION ; RELEASE ; TERRESTRIAL ; CLIMATE ; OXYGEN ; OCEAN ; CONSTRAINTS ; ASSEMBLAGE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34855 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Penn State Univ, Dept Geosci, University Pk, PA 16802 USA; 2.Univ Calif Santa Cruz, Earth & Planetary Sci Dept, Santa Cruz, CA 95064 USA; 3.US Geol Survey, Eastern Geol & Paleoclimate Sci Ctr, 959 Natl Ctr, Reston, VA 22092 USA; 4.Univ Delaware, Dept Geol Sci, Newark, DE USA; 5.Univ Louisiana Lafayette, Sch Geosci, Lafayette, LA 70504 USA |
推荐引用方式 GB/T 7714 | Lyons, Shelby L.,Baczynski, Allison A.,Babila, Tali L.,et al. Palaeocene-Eocene Thermal Maximum prolonged by fossil carbon oxidation[J]. NATURE GEOSCIENCE,2019,12(1):54-+. |
APA | Lyons, Shelby L..,Baczynski, Allison A..,Babila, Tali L..,Bralower, Timothy J..,Hajek, Elizabeth A..,...&Freeman, Katherine H..(2019).Palaeocene-Eocene Thermal Maximum prolonged by fossil carbon oxidation.NATURE GEOSCIENCE,12(1),54-+. |
MLA | Lyons, Shelby L.,et al."Palaeocene-Eocene Thermal Maximum prolonged by fossil carbon oxidation".NATURE GEOSCIENCE 12.1(2019):54-+. |
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